From 4abab5ad6c8465a7528ccdd5f49367da05f78bbd Mon Sep 17 00:00:00 2001
From: Vladimir Azarov <avm@intermediate-node.net>
Date: Tue, 1 Oct 2024 15:47:05 +0200
Subject: Initial version

---
 src/thread/mtx_trylock.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 src/thread/mtx_trylock.c

(limited to 'src/thread/mtx_trylock.c')

diff --git a/src/thread/mtx_trylock.c b/src/thread/mtx_trylock.c
new file mode 100644
index 0000000..40a8b8c
--- /dev/null
+++ b/src/thread/mtx_trylock.c
@@ -0,0 +1,15 @@
+#include "pthread_impl.h"
+#include <threads.h>
+
+int mtx_trylock(mtx_t *m)
+{
+	if (m->_m_type == PTHREAD_MUTEX_NORMAL)
+		return (a_cas(&m->_m_lock, 0, EBUSY) & EBUSY) ? thrd_busy : thrd_success;
+
+	int ret = __pthread_mutex_trylock((pthread_mutex_t *)m);
+	switch (ret) {
+	default:    return thrd_error;
+	case 0:     return thrd_success;
+	case EBUSY: return thrd_busy;
+	}
+}
-- 
cgit v1.2.3